Bay Ridge is one of the few decent neighborhoods left in Brooklyn that can be considered "affordable" without a complete butchering of the definition of that word. So yes, it's becoming a hipster "hood. That being said, the R Train absolutely fucking sucks and it's far enough away from downtown that there's a psychological barrier. That's why it may seem "trashy" to some. It's an eclectic neighborhood that attracts a diverse crowd from various socioeconomic backgrounds. That would include LCN. How big of a piece the Italians have left in Bay Ridge I couldn't tell you, probably very little, but I can guarantee you activity persists.